Gretchen, stop trying to make 'fetch' happen.
...Now thats out of the way. I really enjoy the flavor of this, I'm a sucker for they fey, I wish it was explored more in PF than it is. I was kinda let down by Fey Revisted...
I like this concept a lot, and i wonder where some of your inspiration comes from. I have a few questions- What does a fetch look like as an adult? I'm picturing a scarecrow of sorts- is that correct? Do Fetch only appear to human families or can dwarves and the like be given a fetch?
Im less than thrilled with the ability scores, you come out with a -2 which fairly terrible for a race that someone might actually want to play, thats a huge reason to not want to pick it up. I like the idea of them being fragile but i can't help feel that they have straw for brains... and if they yearn for a divine connection i definately wouldn't give them a penalty to wisdom but would instead make it a bonus. Based off the fluff, I would probably rewrite them to be something like "+2 Dex, +2 Wis, -2 Int" (This way you come out with a net +2 bonus, which is fairly stanard)
Fetch sounds a little too much like 'Fetchling', other than that, very cool.